The Westminster Confession of Faith

Westminster Assembly

Produced by the Westminster Assembly for the great Parliament, this time-honored treasure of the faith bears striking resemblance to the Irish Articles, but is far abler, fuller, and superior to any of its predecessors, and gives proof that the Assembly was steadily dominated by its aim to state nothing therein which is not expressly taught in the Word of God, or derivable therefrom by good and necessary reference.

Section 4

4. They who, in their obedience, attain to the greatest height which is possible in this life, are so far from being able to supererogate, and to do more than God requires, as that they fall short of much which in duty they are bound to do. (Luke 17:10, Neh. 13:22, Job 9:2–3, Gal. 5:17)